Marine-furnace equipment.



A. B. WlLLOUGHBY. MARINE FURNACE EQUIPMENT. APPLICATION FILED OCT. 27. 1913. 1,154,153, PatentedSept. 21, 1915.

3 SHEETS-SHEET l.

A. B. WILLOUGHBY. MARINE FURNACE EQUIPMENT.

APPLICATION FILED OCT. 21. I913. 1,154,153. PatentedSept. 21,1915.

3 SHEETS-SHEET 2.

f7. 5. Howd /w A. B. WILLOUGHBY. MARINE FURNACE EQUIPMENT.

KPPLICATION FILED OCT. 27. 1913. 1,154,153. PatentedSept. 21, 1915. 3 SHEETS-SHEET 3.

MARINE-FURNACE EQUIPMENT.

Application filed October 27, 1913.

To all whomit may concern:

Be it known that I, ALFRED B. VIL- LOLJ'GHBY, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in lVla-rine-Furnace Equipments, of which the following is a specification.

This invention relates to furnaces, and one of the principal objects of the same is to provide means for heating the air that enters through the spaces around the fire door and in front of the furnace, with a view to maintaining a uniform temperature of high de gree in the furnace without excessive use of fuel.

Another object of the invention is to provide an arch at the front and top of the furnace to heat the incoming air which leads through into the furnace from the front, to coke green fuel at the top of the bed while it is being coked from the bottom with the fire structure proper, thus preventing the lowering of the temperature in the furnace and maintaining a steady and uniform temperature at all times.

Still another object of the invention is to improve the construction of the bridge wall with a view to reducing the weight, the cost of construction, and at the same time rendering the bridge wall more eflicient for its purpose than others of greater weight and of more expensive construction.

Another object of the invention is to provide a baffle wall arch to prevent the direct flow of gases and to hold them within the furnace proper while the heat units are being extracted therefrom, thus utilizing as far as possible all the heat units contained within the fuel.

These and other objects may be attained by means of the construction illustrated in the accompanying drawings in which,-

Figure 1 is a longitudinal vertical section of a furnace made in accordance with my invention, and showing the central portion of the furnace broken away. Fig. 2 is a top plan view of the interior of the furnace with the side walls shown in sections. Fig. 3 is a rear end elevation of the furnace. Fig. 4 is a front elevation of the same.

Referring to the drawings numeral 1 designates the outer walls of the furnace which are shown as corrugated in the drawing but it will be understood that the walls may be either plain or corrugated. The dead plate Specification of Letters Patent.

Patented Sept. 21, 1915.

Serial No. 797,622.

2, the grate bars 3, and the rear bearer 4, may be of the usual or any suitable construction, since these parts have no material bearing upon my present invention.

The front arch 5, made of a refractory material is supported at the top within the furnace at the front by means of a bolt 6 extending through the front 7 and into a recess 8 in the refractory arch. The arch 5 is held in position also by means of the arch supports 9, one upon each side, the upper ends of the said supports being oppositely inclined and channeled to receive the ends of the arch, as shown in dotted lines in Fig. 4, and the lower ends of said supports rest upon the dead plate 2. The fire door opening 10 is shown in Fig. 4.

11 is the ash pit and 12 is the soot door, in the bridge wall.

The bridge wall 13 is supported upon the plate 14 and upon a bracket 15 secured to the plate 14 by means of suitable bolts 16. The tombstone 17 is supported centrally upon the bridge wall, shown more clearly in Fig. 2. The front sides of the tombstone are divergent above the bridge wall proper, as at 18, Fig. 2, while the lower edge of the tombstone is wedged between the bridge wall faces.

The soot door 20 may be of the usual kind.

The baflie arch support 21 is provided with angular end portions 22, for support ing the baffle arch 23.

From the foregoing it will be obvious that after the front arch 5 becomes thoroughly heated the incoming air from around the fire door will become instantly heated and materially aid in maintaining a uniform temperature within the furnace, which will result in the material saving of coal, while at the same time the green fuel at the top will be coked and a high temperature maintained around the front portion of the furnace.

There is a great loss in heat units in furnaces as usually constructed, owing to the fact that the cold air enters the front portion above the fire bed and this results in lowering the temperature throughout the entire furnace. The refractory arch 5 when it becomes perfectly heated, intercepts the cold air and heats it at once, so that it does not have any appreciable results in lowering the temperature of the furnace. The baffle wall prevents the direct flow of gases and re tains them within the furna e until t e at units are entirely extracted therefrom, and at the same time the baffle protects the rivet heads at that portion of the furnace, thus saving materially in the matter of repairs.

The bridge wall made in accordance with my invention is simple in construction and light in weight, being very durable and effieient for its purpose.

I claim:

In a furnace, the combination with a front, a dead plate extending across the front, and supports mounted on the dead plate, a one piece refractory arch having its terminals mounted on the supports and having its central portion extending inwardly from the supports and provided with a centrally lined recess disposed substantially Copies of this patent may be obtained for midway between the front and back edges of the arch, the arch further having an open ing'extending from the recess through the front; and a single supporting means for preventing lnward movement of the arch comprising a straight bolt held in said open ing and extending through the front, the

ALFRED B. WILLOUGHBY.

Witnesses PAUL OTTEY, J NEWMAN WADE.

Washington, D. O.

five cents each, by addressing the Commissioner of Patents,j 

